Exhaust gas treating device



Feb. 9, 1932. J BER 1,844,034

EXHAUST GAS TREATING DEVICE Filed Sept. 12, 1950 2 Sheets-Sheet 1 dummaFeb. 9, 1932. J. A. DUBER EXHAUST GAS TREATING DEVICE Filed Sept. 12,1950 2 Sheets-Sheet 2 w o \N o o o o o o o 0 o o O O n 10 0 Dim o o M0 0omo om mogo em no nw o o o o o o o 0 o Q00 :0 O O O O I v IMHN PI| I1 IIF |l|| |||I 1 l Patented Feb. 9, 1932 NlTED JOHN A. DUBER, OFPHILADELPHIA, PENNSYLVANIA, ASSIGNOR OF ONE-EIGHTH TO ANTHONY P.BUSSMAN, FIVE PER CENT TO RICHARD J. HIBBARD, FIVE PER CENT TO JACK G.LLEWELLYN, FIVE PER CENT TO ANTHONY GEORGE, TEN PER CENT TO LEWIS B.OSBORNE, AND TEEN PER CENT TO MARTIN MORLEY, ALL OF CHESTER,

PENNSYLVANIA EXHAUST GAS TREATING DEVICE Application filed September 12,1930.

This invention relates to exhaust gas treating devices and, among otherobjects, aims to provide an improved mufiler havin provision forneutralizing or absorbing tie obnoxious and poisonous carbon monoxide inthe gas before it is exhausted into the atmosphere. The idea is toprovide a simple, efficient and compact device of this character whichcan be installed in place of an ordinary mufiler.

Other aims and advantages of the invention will appear in thespecification when con sidered in connection with the accompanyingdrawings, wherein:

Fig. 1 is a side elevation of a device embodying the invention andshowing it applied to an automobile chassis frame;

Fig. 2 is a longitudinal sectional view on an enlarged scale;

Figs. 3, 4 and 5 are sectional views taken on the lines 3-3, 4-4, and55, respectively, of Fig. 2;

Fig. 6 is a top view showing a part in section;

Fig. 7 is a perspective view, parts being broken away; and

Fig. 8 is a perspective view of a baflie before it is attached to thedevice.

It has long since been recognized that the toxic carbon monoxide fumesin exhaust gases from automobile engines constitute a real menace topublic health. Many deaths in closed garages have been caused byasphyxiation. Moreover, the fumes are very obnoxious if not dangerous oncongested streets and highways.

Many attempts have been made to provide simple and efficacious means torender such gases harmless, but so far as I am aware, such devices havenot been practicable for use on automobiles. In most instances, theproposed devices have been too bulky and cumbersome to be practicable.In other instances, the devices are far too complicated to be producedeconomically. This invention provides a very simple and inexpensivecombined gas treating chamber and muflier tfzlhat can be used in lieu ofan ordinary muf- Referring particularly to the drawings,

Serial No. 481,573.

the selected embodiment of the invention is shown in Fig.1 as beingconnected to an exhaust pipe 10 and secured below the chassis frame 11of an automobile which may be of any make. It is preferably cylindricaland may be about the same size as an ordinary mufiier.

In this example, the construction and arrangement is such that theexhaust gas is first treated by passing over a chemical solution in achamber surrounding a mufller and the treated gas is then admitted tothe mufiier from which it is exhausted into the atmosphere. The mufllerhere comprises an inner sheet metal cylinder 12 having end walls 13 andpresenting a series of spaced perforated bafiies 14 so arranged that thegases are made to travel throu h the cylinder in a zigzag path. 1 Thismu er cylinder is entirely enclosed or surrounded by a larger cylinder15 having end walls 16 spaced from the ends of the mufiier cylinder. Theconstruction is such that the annular space between the cylindersprovides the exhaust gas treating chamber which is adapted to bepartially filled with a suitable chemical compound such as a dilutehydrochloric acid solution of cuprous chloride which will absorb carbonmonoxide gas.

The exhaust gas is here admitted to the space between the cylindersthrough a pipe nipple 17 on one side of the vertical center line of thefront end wall of the outside cylinder, preferably being first slightlycooled by means of ordinary heat radiating fins or ribs 18 on theexhaust conduit 10 (Fig. 1). The gas is confined to travel in a zigzagpath over the surface of the chemical solution by means of a sheet metalbafiie 19 (Fig. 8), preferably welded to the walls of both cylinders. Inthis example, the baflie provides a vertical partition 20 at one side ofthe vertical center line of the cylinders and terminating below thelevel'of the liquid solution. It is substantially U-shaped and extendsabove the muffler cylinder as shown in Figs. 6 and 7, one leg or runterminating short of the front end of the mufiier cylinder. When thisbattle is secured in place, it also serves to hold the cylindersproperly spaced. Its construction is such that the gas travelsrearwardly through one side ofithe, annular space between the cylinders;thence, across the space at their rear ends; and, then, forwardlythrough the other side, before it can enter the muflier cylinder (seethe arrow in Fig. 2). It is thus subjected to the chemical action of thetreating solution throughout the zigzag path and a large part of itscarbon monoxide is absorbed.

The treated gas enters the muffler cylinder through a series ofperforations in its upper side wall arranged between the longitudinalportions of the baffle 19. The gas passes through the space between thefront end of the short leg of the baflle and the front end wall of theouter cylinder. The perforations are preferably progressively smallerfrom the front to therear end of the muflier cylinder so that most ofthe gas enters the muflier near the front end and travels through theperforations in the baflle plates 14 to muffle the noise. The muffledgas then passes out through an exhaust conduit 22 connected to the rearend wall of the muflier cylinder and passing through the rear end wallof the surrounding cylinder 15. This also further serves to support themuflier cylinder.

To supply the chemical solution to the treating chamber and prevent itfrom being filled above the desired'level, there is shown a fillingconduit23 projecting through the outer cylinder at one side and having aU- bend or goose neck 24 so that the liquid will overflow when thechamber is, say, half full. The vertical filling inlet is adapted to beclosed by a suitable cap or screw plug 25. This conduit may extendhorizontally to any point where the filling opening is easilyaccessible. Further, the treating solution may be drained through anordinary drain cock 26 in the lower side wall of the outer cylinder.

To enable the muflier to be cleaned periodically, a pipe nipple 27 isshown as passing through the front end walls of both cylinders so thatair or a cleansing fluid may be discharged through it into the mufflercylinder. This nipple is closed by an ordinary screw cap 28.

From the foregoing description, it will be seen that the improved devicecan be made of a few simple parts which are easily fabricated byelectric welding. The sheet metal cylinders and baflies ordinarily willbe made of sheet steel or a relatively cheap bronze. The size can bevaried to suit the requirements of any engine and the installation in anautomobile is a very simple matter. Furthermore, the construction issuch that practically none of the treating solution is lost as it cannotsplash into the muflier on account of the gas baflle. The solution willbe agi-. tated by the vibrations of the automobile so as to insureintimate contract between the gas and the liquid.

Obviously, the present invention is not restricted to the particularembodiment thereof herein shown and described.

What is claimed is:

1.. An exhaust gas treating device of the character describedcomprising, in combination, a pair of cylinders arranged one within theother and providing an annular chamber therebetween; an inlet for theexhaust gases connected to'one end of the outer cylinder; a baflieextending longitudinally between the walls of the cylinders and acrossthe annular space to cause the gas to travel back and forth in theannular space; the inncr cylinder having perforations adjacent to thebaflie to admit the gas to the inner cylinder; mufller means within theinner cylinder; and an exhaust outlet conduit connected to the innercylinder.

2. An exhaust gas treating device of the character described comprising,in combination, a pair of substantially concentric cylinders one withinthe other and providing an annular fluid receiving chamber therebetween;said chamber adapted to contain a chemical gas treating solutlon; aninlet for the exhaust gases connected to one end of the outer cylinderto discharge exhaust gases into said annular chamber so as to pass overand come in contact with the chemical treating solution therein; abaflie extending longitudinally between thecylinders and arran ed tocause the exhaust gas to travel bac and forth in said annular space; theinner cylinder having perforations adjacent to the baffle and above thelevel of the chemical treating solution to permit gas to enter the innercylinder; muflier means within the inner cylinder; and an exhaust outletconduit connected to the inner cylinder.

3. An exhaust gas treating device of the character described comprising,in combination, a pair of sheet metal cylinders arranged one within theother and providing a gas treating chamber therebetween; an inlet forthe exhaust gases connected to one end of the outer cylinder anddischarging in said chamber; a zigzag baflle extending between andconnected to both cylinders so as to cause the gas to travel in a zigzagpath in said chamber; said chamber adapted to contain a chemical gastreating solution below the level of the gas inlet conduit; the innercylinder.

character described comprising, in combination, a pair of concentricsheet metal cylinders having closedend walls and spaced from each otherto provide an annular gas treating chamber thercbetwccn; a zigzag bafllebetween the cylinders at the upper side of the inner cylinder providinga partition to cause the gasto travel in a zigzag path through theannular treating chamber; said chamber adapted to contain a chemical gastreating solution below the level of the baflle; the inner cylinderhaving openings adjacent to the battle to admit gas to the innercylinder after it has travelled back and forth in said chamber over thesolution; and an exhaust outlet conduit connected to the inner cylinder.

5. An exhaust gas treating device of the character described comprising,in combination, a pair of concentric cylinders having closed end wallsand spaced from each other to provide a horizontal gas treating chamber;a gas inlet conduit connected to one end wall of the outer cylinder atone side of the vertical center line so as to admit gas to said chamber;said chamber adapted to contain a chemical gas treating solution; bafliemeans between said cylinders including a vertical partition at the gasinlet end; and a substantially U-shaped bafiie plate extendinglongitudinally between the cylinders at the top side so as to cause thegas to travel back and forth in the chamber above and in contact withthe treating solution; one leg of the bafiie terminating short of-theexhaust inlet and of the inner cylinder and said inner cylinder having aseries of perforations in its upper portion between the legs of saidbattle to permit gas to enter the inner cylinder; a series of perforatedbaflies within the inner cylinder arranged to cause the gas to travel ina zigzag path longitudinally thereof toward the outlet end; an exhaustoutlet conduit connected to the outlet end of said inner cylinder; afilling conduit connected to and passing through the wall of the outercylinder so arranged as to prevent the outer cylinder from being filledabove the desired level; a drain cock connected to the lower portion ofthe outer cylinder so as to clean out the treating solution; and a pipenipple connected to the inner cylinder at the end opposite from theoutlet end to permit cleaning fluid to be injected therein.

6. An exhaust treating device of the character described comprising, incombination, a pair of concentric sheet metal cylinders providing a gastreating chamber therebetween;

an exhaust inlet conduit connected to the cylinder; and an exhaustoutlet conduit connected to the outlet end of the inner cylinder.

In testimony, that I claim the foregoing as my own, I have heretoaffixed my signature.

J. A. DUBER.

